Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
xUbuntu is an PC-/Xbox-enabled version of Ubuntu GNU/Linux distribution. xUbuntu is not a stand-alone, independent distribution. However the install process - and naturally the bootloader, the kernel and the kernel modules - are all customized for PC and Xbox (i386).
The actual release of "xUbuntu" linux system LiveCD is based on sources of Ubuntu "Breezy Badgar, Version 5.10" and some packages of Debian "Sarge 3.1".
"xUbuntu" Live-CD boots on hardware of PC (i386) and Xbox (Intel Pentium III 700 MHz, 64 MB RAM). The live system itself does not require any space on your hard disk. But only for Xbox, there is a SWAP-file inside partition Z to force perfomance.